If those traps in the corners where made right (I don't doubt it) then sure I could see a bit of eq here and there. There is a lot of gray when it comes to this stuff and you sir really did take the time to treat the low end the best you could (hats off). Where I get worried is when someone does 10% of what you did (happens a lot) or worse yet none at all and straps on the EQ. That is where you can get yourself into a lot of trouble (back to the decay).